Nanjing Chemical Material Corp.
Expandable Microspheres in China are tiny spherical plastic particles consisting of a polymer shell and encapsulated gas. When heated, the internal pressure of the gas increases, and the thermoplastic shell softens, causing the microsphere to expand dramatically while the gas remains inside. Different expandable microspheres have different expansion temperature ranges, which range from 80-190°C (175 to 375°F). Due to varying thermodynamic behaviors, the appropriate temperature range can be selected for each process and application. Additionally, New Chemical Source can provide customization of expandable microspheres with various particle sizes according to your needs (expanded microsphere sizes range from 20-150μm).
Reduces the friction coefficient of coatings, improving dry and wet rub fastness and scratch resistance.
Provides a high level of surface smoothness and a warm hand feel, creating a soft, velvet-like tactile sensation on the surface of the coating.
Significantly enhances the suede effect on the coating surface.
Offers filling, covering, and matting effects.
Volume stability, no shrinkage deformation.
Good storage stability.
Repair putty is a type of water-based coating used similarly to putty to improve various leather defects. Repair putty has excellent filling capacity and can be used to correct genuine leather defects caused by scars, scratches, insect bites, etc. When mixed with adhesives, Expandable Microspheres in China can create repair putty. Suitable adhesives include water-based polyurethane, acrylic resin, etc. Expandable Microspheres in China as a filling material enhances the filling ability of repair putty for genuine leather. Therefore, Expandable Microspheres in China can be used as leather surface coating repair agents. Expandable Microspheres in China, due to their strong filling performance and low shrinkage, can be used as a base repair for genuine leather. Finished repair putty with pre-expanded microspheres has low shrinkage, easy polishing, good flexibility, and a soft feel. For producing repair putty, it is recommended to use Expandable Microspheres in China wet powder, which is coated with moisture, is dust-free, and easy to measure.
Using Expandable Microspheres in China, adhesives, and auxiliary agents added to the mixing equipment in a certain ratio, mixed at low speed for a set time to produce a uniform, paste-like viscous liquid. Common equipment used is a planetary mixer. Using manual or machine coating methods, apply onto the leather surface, dry naturally or at a low temperature. After surface drying, polish and grind to maintain the original texture of the leather while achieving a slight velvet-like finish. This process can repair damages on various leather goods, leather garments, sofas, and genuine leather seats in vehicles. The principle of using repair putty is to fill the damage sufficiently while using the least amount to avoid covering the leather texture. For larger damages, fill with leather shavings first before using repair putty to fill gaps.
